One of the best surprises of this season's Arrow is a favorite DC villain who had a brief cameo in the episode "Suicide Squad." But we only got to see this character silhouetted; here's what they looked like in full costume and makeup. Arrow spoilers below.

Cassidy Alexa portrayed the imprisoned Harley Quinn in "Suicide Squad," with Tara Strong providing that distinctive voice. (Strong also voices Harley in the game Batman: Arkham City.) Since we didn't get to see Alexa in her full Harley hair and makeup on screen, Michael Rowe, who plays Deadshot, posted this image to Instagram:

At the moment, the producers have said they have no particular plans to bring Harley Quinn in as a recurring character. For now, her appearance is just meant as a playful nod to the mad psychiatrist.